Accuwound Acoustic Guitar Strings Light Gauge .012-.053 FREE Extra E-1st String Accuwound Premium Acoustic Guitar Strings Light: .012-.053 with FREE Extra E-1st String (smallest string). Phosphor Bronze 100% Satisfaction Guaranteed Made in the U.S.A. Plain Steel Phosphor Bronze Wound E (1st) Plain Steel .012 B (2nd) Plain Steel .016 G (3rd) Phosphor Bronze Wound .024 D (4th) Phosphor Bronze Wound .032 A (5th) Phosphor Bronze Wound .042 E (6th) Phosphor Bronze Wound .053 Accuwound guages are guaranteed to be accurate. Every pack. Everytime.